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Dessert

Velvet Sponge Cake

A light sponge cake made with eggs, sugar, flour, baking powder, and boiling water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Sugar and flour are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 92,116 recipes. Both carry phenylacetaldehyde, which smells hawthorne, honey. The science ↓

Velvet Sponge Cake

Oven, in the book's wordsA moderate oven

Ingredients

Directions

The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

  1. Preheat the oven to 350°F (175°C).

Make the batter

  1. In a large bowl, beat the egg yolks and gradually add the sugar until well combined, then mix in the boiling water.

  2. Sift together the flour and baking powder, then gradually add to the egg mixture.

  3. In a separate bowl, beat the egg whites until stiff peaks form, then gently fold into the batter.

Bake

  1. Pour the batter into a greased cake pan and bake for 30-35 minutes or until a toothpick comes out clean.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Sugar + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  2. Egg + flourtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Egg + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

    Shared aroma: 2-nonenal (fatty, green).

Egg and flour barely smell alike, yet cooks put them together in 106,462 recipes: they work on texture and structure more than aroma.

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Eggs
Egg whites trap air for lift, and yolks add richness and structure to the crumb.
Flour
Provides the starch and protein that set the cake's structure as it bakes.
Sugar
Sweetens the cake and helps keep the crumb tender and moist.
Baking powder
Releases gas during baking, helping the cake rise and become light.
Boiling water
Adds moisture to the batter and helps the cake stay soft.

The step that matters

Folding in the beaten egg whites. The whites hold the air that makes this sponge light. Folding gently keeps those bubbles intact, while vigorous stirring deflates the batter and produces a dense, flat cake.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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